Hmm, those could work (if this idea goes forward, I might just have to do it!). As for Wendy and Natsu...that's trickier. Wendy being so young might make a cute Alice in Wonderland (even though that's not technically a fairy tale). For Natsu, if someone did a couple, they could be Lucy and Natsu as either Cinderella and her prince or Sleeping Beauty and Prince Phillip. That would be kind of cute^^